how do I do these 1. The following chemical equation has NOT been balanced.   Na + H2O --> NaOH + H2   How many grams of sodium are needed to produce 0.250 moles of hydrogen gas?

Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter4: Stoichiometry
Section: Chapter Questions
Problem 4.8PAE: 4.8 In an experiment carried out at very low pressure, 13x1015 molecules of H2 are reacted with...
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how do I do these

1. The following chemical equation has NOT been balanced.

 

Na + H2O --> NaOH + H2

 

How many grams of sodium are needed to produce 0.250 moles of hydrogen gas?

 

2. If 2.47 moles of calcium chloride reacts with fluorine gas, how many grams of calcium fluoride are made?

 

3. In the balanced chemical equation below, how many grams of lithium carbonate are produced from  0.41 moles of lithium phosphate and excess iron(II) carbonate?

 

3 FeCO3 + 2 Li3PO4 --> 3 Li2CO3 + Fe3(PO4)

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